With all do respect Joe, when you mentioned 40 years ago, you mentioned paper. LOL You are right, I am from the design side but have spent my share of time from the manufacturing side in a number of ways including NC Programing from both 2D drawings and 3D models. Other then that I am not so insecure to defend my experience and what manufacturing needs to get the job done. Your stab at the block with wholes is cute and I enjoy your candor. I do recommend taking a more open minded look at the 3D viewing capability of a number of products; some I can recommend. It is my real life experience that when manufactuing companies "see" the examples they often ask; "Why are we waiting? Why don't we start using this now?" Seeing an entrie assembly or sub-assembly or whatever level of parts a supplier may need to see along with all the manufacturing information is really very simple.